decareto advantages over free tools
You can also perform a website check with apps like Webbkoll or the Browser Developer tools, but decareto provides a more comprehensive analysis in a fraction of the time.
External services usually set 1st-party cookies that can only be identified by name. You have to guess or research at great expense what their source is, and which purpose they have
The same applies to external services - based on downstream requests, not only the service itself must be identified, but also its properties (purpose, data transfer to insecure third countries, etc), which neither Webbkoll nor the development tools can do.
For a complete analysis, all sub-pages of a website must be checked, because especially services like captchas, videos, maps or social plugins are often used on subpages.
An audit must also show cookies and services that are loaded only after consent has been given via a consent banner - again for all subpages. In particular, cookies and services requiring consent must be detected that are loaded without consent.
These aspects are fully automated by decareto, manual execution with free tools is not practical when looking for this depth.